APT-KEY(8)                (06 May 2020)                APT-KEY(8)

     NAME
          apt-key - Deprecated APT key management utility

     SYNOPSIS
          apt-key [--keyring filename] {add filename | del keyid |
                  export keyid | exportall | list | finger | adv |
                  update | net-update | {-v | --version} |
                  {-h | --help}}

     DESCRIPTION
          apt-key is used to manage the list of keys used by apt to
          authenticate packages. Packages which have been
          authenticated using these keys will be considered trusted.

          Use of apt-key is deprecated, except for the use of apt-key
          del in maintainer scripts to remove existing keys from the
          main keyring. If such usage of apt-key is desired the
          additional installation of the GNU Privacy Guard suite
          (packaged in gnupg) is required.

          apt-key(8) will last be available in Debian 11 and Ubuntu
          22.04.

     SUPPORTED KEYRING FILES
          apt-key supports only the binary OpenPGP format (also known
          as "GPG key public ring") in files with the "gpg" extension,
          not the keybox database format introduced in newer gpg(1)
          versions as default for keyring files. Binary keyring files
          intended to be used with any apt version should therefore
          always be created with gpg --export.

          Alternatively, if all systems which should be using the
          created keyring have at least apt version >= 1.4 installed,
          you can use the ASCII armored format with the "asc"
          extension instead which can be created with gpg --armor
          --export.

     COMMANDS
          add filename (deprecated)
              Add a new key to the list of trusted keys. The key is
              read from the filename given with the parameter filename
              or if the filename is - from standard input.

              It is critical that keys added manually via apt-key are
              verified to belong to the owner of the repositories they
              claim to be for otherwise the apt-secure(8)
              infrastructure is completely undermined.

              Note: Instead of using this command a keyring should be
              placed directly in the /etc/apt/trusted.gpg.d/ directory

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              with a descriptive name and either "gpg" or "asc" as
              file extension.

          del keyid (mostly deprecated)
              Remove a key from the list of trusted keys.

          export keyid (deprecated)
              Output the key keyid to standard output.

          exportall (deprecated)
              Output all trusted keys to standard output.

          list, finger (deprecated)
              List trusted keys with fingerprints.

          adv (deprecated)
              Pass advanced options to gpg. With adv --recv-key you
              can e.g. download key from keyservers directly into the
              trusted set of keys. Note that there are no checks
              performed, so it is easy to completely undermine the
              apt-secure(8) infrastructure if used without care.

          update (deprecated)
              Update the local keyring with the archive keyring and
              remove from the local keyring the archive keys which are
              no longer valid. The archive keyring is shipped in the
              archive-keyring package of your distribution, e.g. the
              debian-archive-keyring package in Debian.

              Note that a distribution does not need to and in fact
              should not use this command any longer and instead ship
              keyring files in the /etc/apt/trusted.gpg.d/ directory
              directly as this avoids a dependency on gnupg and it is
              easier to manage keys by simply adding and removing
              files for maintainers and users alike.

          net-update (deprecated)
              Perform an update working similarly to the update
              command above, but get the archive keyring from a URI
              instead and validate it against a master key. This
              requires an installed wget(1) and an APT build
              configured to have a server to fetch from and a master
              keyring to validate. APT in Debian does not support this
              command, relying on update instead, but Ubuntu's APT
              does.

     OPTIONS
          Note that options need to be defined before the commands
          described in the previous section.

          --keyring filename (deprecated)
              With this option it is possible to specify a particular

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              keyring file the command should operate on. The default
              is that a command is executed on the trusted.gpg file as
              well as on all parts in the trusted.gpg.d directory,
              though trusted.gpg is the primary keyring which means
              that e.g. new keys are added to this one.

     FILES
          /etc/apt/trusted.gpg
              Keyring of local trusted keys, new keys will be added
              here. Configuration Item: Dir::Etc::Trusted.

          /etc/apt/trusted.gpg.d/
              File fragments for the trusted keys, additional keyrings
              can be stored here (by other packages or the
              administrator). Configuration Item
              Dir::Etc::TrustedParts.

     SEE ALSO
          apt-get(8), apt-secure(8)

     BUGS
          m[blue]APT bug pagem[][1]. If you wish to report a bug in
          APT, please see /usr/share/doc/debian/bug-reporting.txt or
          the reportbug(1) command.

     AUTHOR
          APT was written by the APT team <apt@packages.debian.org>.

     AUTHORS
          Jason Gunthorpe

          APT team

     NOTES
           1. APT bug page
              http://bugs.debian.org/src:apt

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